Versfeld N J, Dai H, Green D M
TNO Human Factors Research Institute, Soesterberg, Netherlands.
Percept Psychophys. 1996 Jan;58(1):10-21. doi: 10.3758/bf03205470.
This paper presents the optimum decision rule for an m-interval oddity task in which m-1 intervals contain the same signal and one is different or odd. The optimum decision rule depends on the degree of correlation among observations. The present approach unifies the different strategies that occur with "roved" or "fixed" experiments (Macmillan & Creelman, 1991, p. 147). It is shown that the commonly used decision rule for an m-interval oddity task corresponds to the special case of highly correlated observations. However, as is also true for the same-different paradigm, there exists a different optimum decision rule when the observations are independent. The relation between the probability of a correct response and d' is derived for the three-interval oddity task. Tables are presented of this relation for the three-, four-, and five-interval oddity task. Finally, an experimental method is proposed that allows one to determine the decision rule used by the observer in an oddity experiment.
本文提出了一种适用于m区间奇异任务的最优决策规则，其中m - 1个区间包含相同信号，一个区间不同或为奇异信号。最优决策规则取决于观测值之间的相关程度。当前方法统一了“游动”或“固定”实验中出现的不同策略（麦克米伦和克里尔曼，1991年，第147页）。结果表明，m区间奇异任务常用的决策规则对应于观测值高度相关的特殊情况。然而，与异同范式一样，当观测值独立时，存在不同的最优决策规则。推导了三区间奇异任务中正确反应概率与d'之间的关系。给出了三区间、四区间和五区间奇异任务的该关系表。最后，提出了一种实验方法，可用于确定观察者在奇异实验中使用的决策规则。
